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physics.atom-ph2021
The hyperfine anomaly in heavy atoms and its role in precision atomic searches for new physics
B. M. Roberts, J. S. M. Ginges
We report on our calculations of differential hyperfine anomalies in the nuclear single-particle model for a number of atoms and ions of interest for studies of fundamental symmetr…
physics.atom-ph2020
Nuclear magnetic moments of francium 207-213 from precision hyperfine comparisons
B. M. Roberts, J. S. M. Ginges
We report a fourfold improvement in the determination of nuclear magnetic moments for neutron-deficient isotopes of francium-207--213, reducing the uncertainties from 2% for most i…
physics.atom-ph2018
Precision measurement noise asymmetry and its annual modulation as a dark matter signature
B. M. Roberts, A. Derevianko
Dark matter may be composed of self-interacting ultralight quantum fields that form macroscopic objects. An example of which includes Q-balls, compact non-topological solitons pred…